Harold...didn't realize there are ( 7 ) planks on the '46
For what its' worth on my '40, inside overall width of the bed is 48 5/8". ( 6 ) planks - 8 3/4, 7, 7, 7, 7, 8 3/4


1940 Chevy KC 1/2-Ton
In the Stovebolt Gallery